By His Stripes.

The consequence of this to us is our peace and healing. Hereby we have peace: The chastisement of our peace was upon him he, by submitting to these chastisements, slew the enmity, and settled an amity, between God and man he made peace by the blood of his cross. Whereas by sin we had become odious to God's holiness and obnoxious to his justice, through Christ God is reconciled to us, and not only forgives our sins and saves us from ruin, but takes us into friendship and fellowship with himself, and thereby peace (that is, all good) comes unto us, Colossians 1:20. He is our peace, Ephesians 2:14. Christ was in pain that we might be at ease he gave satisfaction to the justice of God that we might have satisfaction in our own minds, might be of good cheer, knowing that through him our sins are forgiven us.

Hereby we have healing for by his stripes we are healed. Sin is not only a crime, for which we were condemned to die and which Christ purchased for us the pardon of, but it is a disease, which tends directly to the death of our souls and which Christ provided for the cure of. By his stripes (that is, the sufferings he underwent) he purchased for us the Spirit and grace of God to mortify our corruptions, which are the distempers of our souls, and to put our souls in a good state of health, that they may be fit to serve God and prepared to enjoy him. And by the doctrine of Christ's cross, and the powerful arguments it furnishes us with against sin, the dominion of sin is broken in us and we are fortified against that which feeds the disease. - Matthew Henry